Drugs like cocaine and even marijuana and nicotine affect the brainâs natural function. The drug overwhelms the brain with a chemical called dopamine. Dopamine makes the brain and body feel pleasure. When the drug wears off, the dopamine drains out of the userâs system. This makes a person feel that the only way they can feel pleasure is by taking drugs.
In 1984, Apple debuted the operating system that is now known as the Classic Mac OS with its release of the original Macintosh System Software. The system, rebranded Mac OS in 1996, was preinstalled on every Macintosh until 2002 and offered on Macintosh clones for a short time in the 1990s.
The operating system on a PC is âWindowsâ. The operating system on a Mac is âMac OS Xâ. The operating system is what you see after you turn on a computer for the first time, but before you install any programs. The OS in iOS stands for Operating System. Thus iOS is the base software that allows all other apps to run on an iPhone, iPod Touch or iPad. Some operating systems include games or utilities. For example Windows comes with Solitaire and iOS devices come with programs to play music and videos.